Answer:
-70
Explanation:
5×+8×-7 = -70
f(-3) = -70
5x^3+8x^2-7 find f(-3)
f(x) = 5x^3+8x^2-7
f(-3) = 5(-3)^3+8(-3)^2-7
f(-3) = 5(-27)+8(9)-7
f(-3) = -135+72-7
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